The world's largest military aircraft cemetery.

A former electrical substation is now home to an eccentric junk art masterpiece.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

An urban laboratory.

Tracks near this Texas nature site were once thought to support the Creationist belief that man and dino coexisted.

In this small Phoenix taxidermy emporium, you can find everything from a squid in a jar to a freeze-dried toad.

Miniature art that tells an enormous story.

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

This sacred cavern, 400 feet deep, is home to millions of bats and an ancient burial ground.

A common entry point to the Griffith Observatory trail holds its own wonders.

The most unique castle in all of Southern California, entirely constructed from repurposed materials.

Thousands of artifacts relating to human sexuality, including the world's largest sex bike.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

A cave's rare beauty held a cavernous secret hidden underground.

This traditional garden in the San Fernando Valley doubled for Star Fleet Academy, and is irrigated entirely by wastewater.

A couple turned their front yard into an artistic masterpiece.

One of the most unusual geological features, recognizable from a dozen hit movies.

A recreated Stonehenge stands in a country field, complete with Easter Island moai heads standing as sentries.

A new kind of theme park for adults off the Las Vegas Strip.

The neighborhood shop is a sort of tiny cactus museum full of exotic specimens you can take home.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

The Grand Canyon of Texas.

Visitors can walk over the largest concentration of Columbian mammoths to have died from one event.

An abandoned quicksilver mining town surrounded by the Big Bend parks.